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  1. #include <iostream>
  2. #include <vector>
  3. #include <queue>
  4. using namespace std;
  5.  
  6. vector<vector<int>> wektor;
  7. vector<int> odwiedzone;
  8. vector<int> komponent;
  9.  
  10. void BFS(int V, int componentId) {
  11.     queue<int> q;
  12.     q.push(V);
  13.     odwiedzone[V] = 1;
  14.     komponent[V] = componentId;
  15.  
  16.     while (!q.empty()) {
  17.         int p = q.front();
  18.         q.pop();
  19.  
  20.         for (int j : wektor[p]) {
  21.             if (odwiedzone[j] == 0) {
  22.                 odwiedzone[j] = 1;
  23.                 komponent[j] = componentId;
  24.                 q.push(j);
  25.             }
  26.         }
  27.     }
  28. }
  29.  
  30. int main() {
  31.     int a {0}, b {0};
  32.     int ile_v {0};
  33.     int ile_e {0};
  34.  
  35.     cin >> ile_v >> ile_e;
  36.  
  37.     wektor.resize(ile_v + 1);
  38.     odwiedzone.resize(ile_v + 1, 0);
  39.     komponent.resize(ile_v + 1, 0);
  40.  
  41.     for (int i = 0; i < ile_e; i++) {
  42.         cin >> a >> b;
  43.         wektor[a].push_back(b);
  44.         wektor[b].push_back(a);
  45.     }
  46.  
  47.     int componentId = 0;
  48.     for (int i = 1; i <= ile_v; i++) {
  49.         if (odwiedzone[i] == 0) {
  50.             componentId++;
  51.             BFS(i, componentId);
  52.         }
  53.     }
  54.  
  55.     int ile_q {0};
  56.     cin >> ile_q;
  57.  
  58.     for (int i = 0; i < ile_q; i++) {
  59.         int p, k;
  60.         cin >> p >> k;
  61.         if (komponent[p] == komponent[k]) {
  62.             cout << "TAK\n";
  63.         } else {
  64.             cout << "NIE\n";
  65.         }
  66.     }
  67.  
  68.     return 0;
  69. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin
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8 6
1 2
5 7
3 2
5 8
1 3
2 4
4 
1 4
6 7
7 5
3 8
stdout
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TAK
NIE
TAK
NIE
https://ideone.com/TKVmiz
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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